API Development & System Integration

Stefanos Mandalas

Starting at

/hr

About this service

Summary

I build scalable, high-performance APIs that integrate seamlessly with data platforms and cloud infrastructure. With expertise in API design, software architecture, data engineering, and cloud infrastructure, I deliver secure, efficient solutions tailored to your needs.

Process

Initial Consultation & Requirement Gathering

Discuss project scope, goals, and technical requirements.

Understand existing systems, data sources, and integration needs.

Design & Architecture

Design the API architecture and integration blueprint, considering scalability, security, and performance.

Establish a high-level system architecture plan and design an optimized data flow for seamless communication.

Development & Integration

Develop and document the API (RESTful/GraphQL) and integrate with external systems or databases.

Ensure seamless connectivity with cloud platforms, data storage, and other services.

Testing & Optimization

Implement unit, integration, and performance tests to ensure API reliability.

Optimize for performance, security, and scalability, including authentication and rate limiting.

Deployment & Securement

Deploy APIs to cloud platforms (AWS, GCP, Azure) or client infrastructure.

Set up necessary CI/CD pipelines for smooth and automated deployments.

Secure API endpoints using industry best practices, ensuring data protection and preventing unauthorized access.

Monitoring Capabilities

Setup monitoring tools (e.g., Grafana, Prometheus) for API performance, error tracking, and scalability.

FAQs

What type of APIs do you develop and which industries do you serve?
I develop all types of APIs (RESTful, GraphQL) and I'm experienced with various industries, with a special focus on data-driven solutions like data integration and predictive analytics.
What is your typical project timeline?
The timeline varies depending on the project scope and complexity. We’ll agree on a detailed timeline before starting.
Will my API be secure?
Absolutely. I follow industry standards and best practices for securing APIs, including OAuth 2.0, JWT authentication, and API rate limiting. Your endpoints will be protected to ensure data integrity and privacy for your users.

What's included

API Implementation
Scalable implementation of RESTful or GraphQL API with authentication, error handling, caching, rate limiting.
API Documentation
OpenAPI documentation.
API Testing
Automated unit, integration, and performance tests.
API Deployment
Deployment automation for AWS, GCP, Azure, or on-premise infrastructure.
API Monitoring
Traffic analytics with Prometheus and Grafana.

Skills and tools

Backend Engineer

DevOps Engineer

Software Architect

Apache Airflow